# temp=input()
# guess=int(temp)
# if guess==6:
#     print('dui')
# else:
#     print('budui')

import numpy as np
arr1=np.array([1,2,3])
print('一维数组 arr1:\n',arr1)
arr2=np.array((4.5,5.6,6.8),dtype='int32')
print('一维数组 arr2:\n',arr2)
c=np.array([[1,2,3],[4,5,6]],dtype='float32')
print('2*3的二维数组c：\n',c)